COMP Cams K12-208-3 Dual Energy Hydraulic Flat Tappet Camshaft K-Kit - 265H

The COMP Cams K12-208-3 is a complete Dual Energy 265H Hydraulic Flat Tappet Camshaft K-Kit designed for Chevrolet Gen I Small Block engines (262–400 c.i., 1955–1998). This camshaft features a unique asymmetric grind with more exhaust duration and lift than the intake, making it an excellent choice for street-driven builds that need to overcome the limitations of restrictive stock exhaust systems.

The Dual Energy grind trades a modest amount of low-end power for noticeably stronger mid-range and upper-RPM performance. The result is a very strong mid-range torque curve, a characteristic lopey idle, and everyday streetability — all while remaining compatible with stock exhaust configurations.

Camshaft Specifications:

• Cam Type: Hydraulic Flat Tappet
• Advertised Duration: 265° Intake / 269° Exhaust
• Valve Lift (with 1.5:1 rockers): .442" Intake / .465" Exhaust
• Lobe Separation Angle: 110°
• Basic Operating RPM Range: 1,500–5,750 RPM

K-Kit Contents Include:

• Hydraulic flat tappet camshaft
• Hydraulic lifters
• Valve springs
• Retainers
• Valve locks
• Valve stem seals
• Timing chain set
• Assembly lubricant
• Decals and installation instructions

Compatibility Notes:

• Fits Chevrolet Gen I Small Blocks: 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 c.i.
• Does not fit LT1/LT4 engines or factory roller Small Blocks (1985 and newer)
• Compatible with stock torque converters
• Not compatible with factory TBI (throttle body injection) applications

COMP Cams backs this kit with a 1-Year Limited Warranty. Whether you're building a classic muscle car, street truck, or performance cruiser, the K12-208-3 delivers a well-rounded power upgrade that works with most stock components right out of the box.